This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAI40X105SCA, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SI40 Standard Cylinder SI40X105SCA
The AirTAC Airtac SI40 Standard Cylinder SI40X105SCA is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø40mm bore and 105mm stroke, G1/4 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAI40X105SCA, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ40 mm
- Stroke105 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- StatusDiscontinued → SAI40X105SCA
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SI40 Standard Cylinder SI40X105SCA
The AirTAC SI40X105SCA is a discontinued double-acting ISO 15552 profile cylinder with a 40mm bore, 105mm stroke and CA clevis mount. Delivering 628N push force at 0.5MPa through a G1/4 port, it is replaced by the SAI40X105SCA. This direct successor shares the exact ISO 15552 mounting interface, bore, stroke and output force, fitting existing fixtures perfectly.
The SAI upgrade features a refined piston seal with two Y-shaped one-way elements for low start-up pressure and extended life. The -S magnet supports legacy CS1-B/DS1-B sensors. Note that plain cylinders drift without live air; use a pilot check valve or SAIL lock variant to hold loads.
Airtac SI40 Standard Cylinder SI40X105SCA Technical Specifications
| Model | Airtac SI40 Standard Cylinder SI40X105SCA |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAI40X105SCA |
| Bore size | Ø40 mm |
| Stroke | 105 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max standard stroke | Up to 1200 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAI40X105SCA carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
The SAI40X105SCA produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SI40 Standard Cylinder SI40X105SCA
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 40 | Bore size in mm. |
| ×105 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SI40 Standard Cylinder SI40X105SCA Is Used
Package Diverting
Drives a 105mm diverting arm on a packaging line, using the CA clevis to pivot packages smoothly without overextending the footprint.
Clamp Actuation
Provides 628N of push force at 0.5MPa to secure medium-duty workpieces during machining, with the SAI magnet confirming clamp position.
Gate Control
Operates a 32kg vertical lift gate for sorting bins, matching the computed vertical lift capacity while relying on a check valve for holding.
Replacing the Airtac SI40 Standard Cylinder SI40X105SCA with the SAI40X105SCA
To replace the SI40X105SCA, order the SAI40X105SCA. Verify your ISO 15552 CA clevis mount, 105mm stroke, G1/4 port and the -S magnet for CS1-B/DS1-B switches. If you need more force, the neighbouring 50mm bore offers 982N push at 0.5MPa; if less is required, the 32mm bore provides 402N. Because the stroke is 105mm, watch for side-load and rod-bending, ensuring proper guide alignment. A standard cylinder does not hold load on air loss—the cushion only decelerates. For secure holding, use an external rod lock, a pilot check valve, or the SAIL/BSAI lock variants.
Replacement checklist
- ✓ Same ISO 15552 interface → SAI40X105SCA
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SI40 Standard Cylinder SI40X105SCA FAQ
Yes, the AirTAC SI40X105SCA is discontinued. The direct replacement is the SAI40X105SCA. It is dimensionally interchangeable per ISO 15552, retaining the same 40mm bore, 105mm stroke, CA clevis mount, G1/4 port and output force.
The G1/4 port feeds a 16mm rod delivering 628N push and 528N pull at 0.5MPa, 879N push at 0.7MPa, 1130N push at 0.9MPa, and a theoretical max of 128kgf at 1.0MPa. It operates at 30-800mm/s with a 27mm adjustable cushion.
Related AirTAC SAI Cylinders
Request a Quote for the SAI40X105SCA
Send us the quantity and destination. We confirm price, stock and lead time on the SAI40X105SCA replacement — usually within 7-8 hours.